You don't have a virus. Your numlock key is turned on. Notice how those same keys are actually labelled with numbers on them, in a different color?
Usually, there's a key to toggle that behaviour. Like, find the key labelled "NUMLOCK" in a different color. Then, hit your Fn key and the NUMLOCK key at the same time. Things should be back to normal for you.
Keep in mind, there's absolutely no virus, to my knowledge, that remaps your keyboard like this.
Following the recent ransomware attacks that leveraged the WannaCrypt0r malware and NSA-developed EternalBlue vulnerability exploit, there was plenty of advice that backup, backup, backup was the best mitigation. Data backups ...